YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.02 | b | 67.08 | d | 60.12 | e | 45.19 | d | 43.50 | f | 62.35 | h |
1986 | 47.88 | c | 45.86 | f | 53.91 | b | 56.21 | f | 64.94 | e | 75.57 | c | 76.37 | e | 80.00 | g | 64.25 | f | 57.96 | e | 50.50 | i | 42.77 | g | 62.77 | f |
1987 | 37.64 | i | 45.20 | h | 46.52 | g | 60.28 | e | 66.61 | l | 76.98 | g | 76.60 | k | 78.82 | l | 73.68 | h | 64.56 | g | 47.83 | g | 37.58 | g | 60.28 | k |
1988 | 37.79 | e | 46.64 | a | 47.84 | c | 54.96 | f | 64.64 | b | 74.07 | a | 81.95 | 77.30 | d | 68.02 | e | 67.02 | g | 46.60 | e | 42.52 | k | 60.54 | c | |
1989 | 37.59 | d | 41.08 | c | 52.20 | c | 63.10 | a | 65.03 | a | 74.10 | a | 82.05 | 76.88 | e | 69.50 | h | 59.12 | c | 51.52 | b | 43.93 | b | 58.78 | a | |
1990 | 39.94 | 42.27 | 51.27 | 59.41 | a | 62.65 | 73.87 | c | 80.74 | 76.92 | a | 72.59 | a | 59.72 | b | 49.31 | a | 33.48 | 58.51 | |||||||
1991 | 39.52 | 50.41 | 43.85 | 53.32 | 60.68 | a | 68.63 | 80.17 | a | 77.97 | 73.02 | c | 64.10 | 48.38 | a | 40.52 | 58.38 | |||||||||
1992 | 39.02 | 47.00 | 49.61 | 59.17 | a | 66.72 | d | 72.32 | b | 77.35 | e | 79.59 | c | 70.94 | d | 63.68 | 45.70 | b | 36.90 | 59.00 | ||||||
1993 | 39.81 | 41.32 | 52.32 | 55.93 | b | 64.35 | 70.42 | 74.85 | 76.28 | f | 69.95 | b | 59.57 | a | 44.72 | 39.80 | a | 55.73 | a | |||||||
1994 | 43.05 | c | 40.07 | 53.34 | 56.09 | b | 63.62 | a | 76.88 | b | 81.03 | a | 80.50 | 72.18 | e | 56.37 | e | 39.20 | b | 40.85 | 58.60 | |||||
1995 | 39.07 | a | 51.20 | 48.03 | 53.02 | 59.89 | d | 69.55 | b | 77.36 | c | 79.11 | d | 72.62 | a | 60.42 | a | 53.17 | 42.97 | 58.87 | ||||||
1996 | 40.87 | 47.97 | 49.95 | a | 57.34 | a | 65.82 | 74.77 | 82.31 | 79.69 | 69.65 | 58.06 | 49.17 | 40.05 | 59.64 | |||||||||||
1997 | 38.31 | 43.81 | b | 51.76 | 53.60 | 69.20 | a | 72.23 | 77.59 | c | 78.87 | a | 72.30 | 57.69 | 49.47 | a | 39.57 | a | 58.70 | |||||||
1998 | 41.45 | 40.16 | 48.19 | 51.20 | 58.91 | c | 67.46 | f | 78.53 | b | 79.48 | c | 70.00 | 56.60 | 46.86 | a | 40.45 | a | 55.62 | a | ||||||
1999 | 43.30 | a | 44.56 | b | 50.20 | a | 50.38 | 61.48 | b | 69.19 | a | 77.02 | 76.53 | a | 70.40 | a | 61.71 | 52.65 | 41.67 | b | 58.26 | |||||
2000 | ----- | z | 44.85 | e | 48.27 | 58.17 | c | 66.44 | e | 73.75 | 76.12 | b | 78.60 | e | 69.34 | e | 58.96 | e | 41.40 | f | 43.45 | b | 61.80 | b | ||
2001 | 40.22 | d | 41.96 | b | 51.53 | 54.45 | 69.27 | 72.41 | b | 77.37 | a | 79.85 | 72.90 | 61.95 | a | 50.14 | a | 36.88 | a | 59.08 | ||||||
2002 | 38.89 | 43.52 | a | 47.55 | 61.03 | 64.55 | b | 78.05 | a | 84.46 | s | 77.82 | l | 71.54 | d | 59.42 | l | 49.68 | b | 39.50 | 54.92 | c | ||||
2003 | 47.89 | 43.68 | 49.23 | 53.40 | 65.13 | 75.22 | e | 83.57 | c | 79.88 | e | 73.87 | 65.65 | 44.43 | 41.16 | b | 60.26 | |||||||||
2004 | 39.60 | 40.09 | 56.19 | 56.47 | 64.02 | a | 74.26 | a | 79.78 | a | 76.94 | 68.60 | 58.74 | d | 45.28 | a | 41.30 | c | 58.44 | |||||||
2005 | 43.77 | c | 44.39 | a | 49.25 | c | 52.89 | c | 65.06 | e | 70.73 | b | 81.69 | b | 77.37 | a | 69.55 | 61.90 | a | 50.57 | 41.35 | 59.04 | ||||
2006 | 41.60 | a | 45.89 | 43.94 | 55.00 | 70.32 | a | 77.97 | a | 84.09 | c | 78.83 | d | 69.29 | d | 59.02 | h | 49.31 | i | 40.12 | c | 60.70 | b | |||
2007 | 38.06 | 44.98 | 54.65 | 58.87 | 67.43 | b | 75.30 | c | 83.89 | c | 78.98 | e | 71.84 | a | 58.19 | g | 53.58 | j | 36.54 | e | 61.05 | b | ||||
2008 | ----- | z | 43.45 | a | 50.52 | a | 56.48 | a | 62.54 | d | 74.89 | c | 83.00 | b | 81.06 | 73.35 | 62.14 | b | 54.00 | ----- | z | 64.14 | b | |||
2009 | 44.35 | a | 43.62 | 49.79 | 54.82 | 72.78 | d | 72.88 | a | 83.45 | a | 78.97 | 75.60 | 57.03 | 51.23 | 36.97 | 60.12 | |||||||||
2010 | 41.16 | 44.26 | a | 49.00 | 52.74 | k | 61.57 | b | 75.17 | 84.55 | a | 79.03 | b | 72.05 | a | 61.42 | 46.24 | a | 43.62 | a | 59.82 | a | ||||
2011 | 41.91 | c | 39.70 | a | 48.40 | 54.92 | 60.63 | a | 71.55 | a | 80.32 | 79.73 | c | 73.62 | b | 59.33 | d | 42.81 | f | 40.87 | 59.18 | a | ||||
2012 | 42.86 | f | 43.75 | e | 48.33 | a | 58.88 | d | 68.68 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.14 | h | 46.38 | s | 50.32 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.09 | 44.03 | 49.97 | 56.18 | 64.71 | 73.49 | 80.21 | 78.66 | 71.26 | 60.10 | 48.26 | 40.09 | 58.99 | |||||||||||||
S.D. | 2.87 | 3.01 | 2.88 | 3.21 | 3.38 | 2.58 | 2.92 | 1.29 | 2.09 | 2.49 | 3.56 | 2.60 | 0.65 | |||||||||||||
SKEW | 1.04 | 0.65 | -0.03 | 0.23 | 0.44 | -0.16 | -0.18 | -0.15 | -0.08 | 0.46 | -0.52 | -0.71 | 0.89 | |||||||||||||
MAX | 47.89 | 51.20 | 56.19 | 63.10 | 72.78 | 78.05 | 84.55 | 81.06 | 75.60 | 65.65 | 54.00 | 43.93 | 60.26 | |||||||||||||
MIN | 37.59 | 39.70 | 43.85 | 50.38 | 58.91 | 68.63 | 74.85 | 76.53 | 67.08 | 56.37 | 39.20 | 33.48 | 58.26 | |||||||||||||
YRS | 23 | 25 | 26 | 24 | 25 | 24 | 24 | 23 | 24 | 22 | 21 | 22 | 13 |